Detecting Jams; Jam Detection Outline; Delay Jams; Stationary Jams - Canon LBP7200Cdn Service Manual

Chapter 2
Manual feed trayPickup solenoid
Cassette pickup solenoid
Duplex reversal solenoid
Paper feederPre-registration sensor
Registration sensor
Manual feed trayPre-registration sensor
Fixing delivery sensor
Fixing loop sensor
Pre-registration sensor
Cassette paper sensor
Manual feedPaper sensor
Delivery full sensor
Manual feed trayFeeding clutch
Duplex feeding clutch

2.5.2 Detecting Jams

2.5.2.1 Jam Detection Outline

2.5.2.1.1 Outline

The following is the detection sensors for paper, to detect whether there is paper or not, and whether the paper is properly fed.
- Registration detection sensor
- Multi manual feed tray pre registration detection sensor
- Fixing delivery detection sensor
- Loop detection sensor
- Pre-registration detection sensor
- Cassette paper detection sensor
- Multi manual feed tray paper detection sensor
- Delivery full detection sensor
- Paper feeder pre-registration detection sensor
The following is the jam that detected by the host machine.
1. Pickup delay jam

2. Pickup stationary jam

3. Fixing delivery delay jam

4. Delivery stationary jam
5. Fixing wrapping-over jam
6. Inside stationary jam.
7. Duplex re-pickup jam.
8. Door open jam.

2.5.2.2 Delay Jams

2.5.2.2.1 Pickup delay jam 1

If the registration sensor (SR4) cannot detect the paper leading edge after the image format starts until the re-pickup is started.

2.5.2.2.2 Pickup delay jam 2

The manual feed tray pre-registration sensor (SR7) cannot detect the paper leading edge within a specified time after manual feed tray pickup starts.
2.5.2.2.3 Fixing delivery delay jam
The fixing delivery sensor (SR8) cannot detect the paper leading edge within a specified time after the re-pickup starts.
The delivery full sensor (SR15) cannot detect the paper leading edge within a specified time after the registration sensor (SR4) detects the paper trailing edge.

2.5.2.3 Stationary Jams

2.5.2.3.1 Pickup stationary jam
If the registration sensor (SR4) cannot detect the paper trailing edge after the re-pickup is started.
2-12
Name
SL1 Manual feed trayPickup solenoid control signal
SL2 Cassette pickup solenoid driver signal
SL5 Duplex reversal solenoid driver signal
SR1 Paper feeder pre-registration detection signal
SR4 Registration detection signal
SR7 Manual feed tray Pre-registration detection signal
SR8 Fixing delivery detection signal
SR10 Fixing loop detection signal
SR12 Pre-registration detection signal
SR13 Cassette paper detection signal
SR14 Manual feed paper detection signal
SR15 Delivery full detection signal
CL1 Manual feed trayFeeding clutch control signal
CL2 Duplex feeding clutch control signal
Signal name Driver
DC Controller
DC Controller
DC Controller
DC Controller
DC Controller
DC Controller
DC Controller
DC Controller
DC Controller
DC Controller
DC Controller
DC Controller
DC Controller
DC Controller
0021-1322
0021-1323
0021-1324
0021-2014
0021-1325